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  • Users: Wedwin
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  1. Wedwin

    Linear motor rules of thumb

    It was some time ago that I asked the question in this thread: http://www.eng-tips.com/viewthread.cfm?qid=143198&page=1 But it is what is the foundation of what has become this thread. I might well report my findings. Just don't forget to breathe until then ... Thanks a lot for the valid...
  2. Wedwin

    Linear motor rules of thumb

    Sorry for the dalay. Itsmoked, I don't know why, but I never came to think about that. Will check. sreid, yes there are six phases. I chose to make the animation continous, and so it became a bit confusing to watch. I don't understand the part with amplifiers. Turning the windings on and off...
  3. Wedwin

    Linear motor rules of thumb

    Hello all! I have been thinking about making a linear motor. Several permanent magnets on a rail and a trolley with six anchors that is turned on and off in sequence. (sorry if the gif is hogging all resources) I have tried to draw this with a few different measurements. But I can't decide...
  4. Wedwin

    Cogs and shapes

    Thanks a lot! Very informative. Those teeth are made according to the system used in the US only. But the information is indeed very good.
  5. Wedwin

    Cogs and shapes

    Yes
  6. Wedwin

    Cogs and shapes

    The internet is vast and I searched for : cog, cogs, cogwheels, gear, spur, and a few others. Yet another set of Swedish words too. As you may be able to figure out, I came up with nothing. Much to my surprise. Yes I would like to buy the suggested book and more. I bet "Karlebo handbok"...
  7. Wedwin

    Cogs and shapes

    Thanks, another step forward.
  8. Wedwin

    Cogs and shapes

    I suppose understanding them would aid me in drawing them, which is the goal.
  9. Wedwin

    Cogs and shapes

    I am not a machinist, and I want to understand it, as previously stated.
  10. Wedwin

    Cogs and shapes

    It is a robotic finger.
  11. Wedwin

    Cogs and shapes

    Here is an image of the gadget in question so far
  12. Wedwin

    Cogs and shapes

    Qcad saves to dxf, but autocad won't recognise the format. Lisp? I can't say, but I am willing to try. Acad? I'll check it out. Got an address? I tried Google, but found everything but CAD forum. External spur, yes
  13. Wedwin

    Cogs and shapes

    I will gladly recieve any help, so please feel asked. Know though, that I use neither Solidworks or Windows, but Qcad (www.ribbonsoft.com) on Linux
  14. Wedwin

    Cogs and shapes

    Thanks! I appreciate it. It is closer than what I succeded with. Not perfect, but it's a step in the right direction.
  15. Wedwin

    Cogs and shapes

    I suppose a professional gearmaker would know far batter than me how to make the teeth. It is not likely though that a pro gets to make these ones. Not even dead certain it is going to be made at all. I guess I want to produce a image of an actual gear by your definition. It is the measurements...
  16. Wedwin

    Cogs and shapes

    I am drawing it with Qcad, and I have no libs. But I would like to make a drawing with all the data so as to be able to produce the modules.
  17. Wedwin

    Cogs and shapes

    I feel the need to design a module or two of a cogwheel. While I have seen many a nice picture on the net, I haven't come across a good description of how to actually design a cog tooth. My aim is a standard metrical spur cogwheel. This problem has bested even "Karl Bjorks lilla gula"
  18. Wedwin

    Stator shape

    I believe You have brought this thread as far as it goes UKpete. Thanks loads. My ponderings are on the whole verified.
  19. Wedwin

    Stator shape

    Allright! UKpete, You have been a real help! I think I have all my questions answered now (well, not by a longshot but I am covered). I did find http://en.wikipedia.org/wiki/Electromagnetism and similar sources of info on the web. The thing about the magnets, I don't want them to be switched...
  20. Wedwin

    Stator shape

    I happened to click away a little and here are a few candidates: Vote? Am I right in thinking thee are too much loss in the first, and not enough benefit in the last?

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